electron microscope

electron microscope

an instrument that focuses a beam of electrons on an object, using electric or magnetic fields, to form an enlarged image of the object on a fluorescent screen, photographic plate, or cathode-ray tube; specif., such an instrument in which the beam of electrons passes directly through an extremely thin object and forms a two-dimensional image: it is much more powerful than any optical microscope

electron microscope

noun

Any of a class of microscopes that use electrons rather than visible light to produce magnified images, especially of objects having dimensions smaller than the wavelengths of visible light, with linear magnification approaching or exceeding a million (106).

electron-microscope

Noun

(plural electron microscopes)

Any of several forms of microscope that use a beam of electrons rather than one of light and thus has a much greater resolving power